Apparatus for continuously making monolithic hollow objects.



PATENTED JUNE 25, 1 907.

J. M. BOYLE. APPARATUS FOR OONTINUOUSLY MAKING MONOLITHIO HOLLOW OBJECTSAPPLICATION FILED FEB.20.1 907.

INVENTOR BY A;

ATTORNEY inurnn srarjss earner orrron JAMES M. BOYLE, OF NEW YORK, N.Y., ASSIGNOR- TO MONOLTTHIG DUCT COMPANY, A CORPORATION OF NEW YORK.

Specification or Letters Patent.

Patented June 25, 1907.

Application filed February 20, 1807. BESiEl N- 358.426.

T0 roll whom it may concern:

- Be it'known that I, JAMEs M. BOYLE, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented a certain new and useful Improvement in Ap aratus forContinuously Making Monolitiic Hollow Objects," of which the followingis a speciiication.

The invention relates to the continuous production of elongated hollowobjects, such as conduits for the conveyance of gas, liquids, electricalconductors, etc. from plastic material, capable of hardening by setting:and

consists in an apparatus embodying movable device for continuouslydepositing plastic material to form the elongated object, preferably ina suitable open mold, and simul taneously forming a bore or cavitytherein by a core carried by said device. Said core may be solid orhollow and of any suitable shape of cross section, but a flexible coreis preferable since it ermits the continuous making of the conduitaround curves.

The invention further consists in the means for applying to the surfaceof the here or cavity, as the same is produced by the core, a materialcapable of setting quicker than the main plastic mass, thus providing arelatively hard lining, which especially at the upper semi-circumfcrenceof the bore prevents any deformation of the bore during the setting ofsaid mass.

In the accompanying drawings-figure 1 is a vertical section of theapparatus on the line a: 9; of Fig. Fig. 2 is a transverse section onthe line 3 'y of Fig, 1.

Similar numbers of reference indicate like parts.

The invention, as hereinafter set forth, is embodied in an apparatus forcontimlously making monolithic cement conduits.

1n the trench 1, I. place side boards 2, forming a trough shaped mold.'3 a rcceptacle for the plastic material of which the conduit is to beformed, mounted on trucks 4 for which the upper edges of the side boards2 serve as rails. By means of the cord 5 carried to any suitablestationary Winding apparatus 6, said receptacle may be moved m thedirection of the arrow, Fig. 1.

The receptacle 3 has a hopper portion, the front wall 7 of which extendsto the bot tom of the mold. At its lower edge said Well is turnedreanvardly as shown atTS: the

flange 10 serves to smooth the upper surface of the plastic mass as thereceptacle 4 is drawn ahead. The rear edge of flange 1'1 0 is preferablycurved upwardly.

In the front Wall 7 is a protruding tube 11, through which passes atubular distensi'ble core 12 of flexible material closed preferablyintegrally at one end 13, and at the other end by a plug 14;, having acool; 15 communicating with the core interior. Any suitable means suchas a ring or collar 16, fastened on the exterior of the core may serveto revent the same from extending rearwardly eyond the wall 7, fartherthan some predetermined distance.

Within the hopper and preferably against v The core 12 thus becomespractically The winding apparatus is now worked to draw thereceptacleonward, plastic me.

terialmeauwhile being continuously put into the hopper. The rate ofspeed of forward motionofthe receptacle 2 should be such, and

the rapidity of hardening of the plastic inaterial also such, thatalthough the core 12 being connected to the receptacle 2 15 con--'stantly curried onward by 1t, before that core comple e y leaves anysection of the deposited mass in length equal to said core, said'section will have sufficiently hardened and set, to retain its shape. Inorder, however, to assist the bore in retaining its shape, I may linesaid bore during the forming operation with a material relativelyquicksetting as 'V. iiody of pie'etic meteirgeinpie es isste'r of peris,bed? is s imam oi cement and send n this the piesterin pow-- q dered isp into the pesssge 17 end is delivered Q1536 somewa spoil. the susfaceof core 12 the forward movement was as here constructed said tinuousl yde ositing plastic material to form 5 of the s13. piester oi eerie'foecomes spread over theupskied surface of the-{tore so sia'own a tiiioisture from the mass it quick sets end so forms iillil -sr v., t. D5.615111? v 5 1%; c Infield, monastic mes-meter degsositin Se-is moidplastic to toss snf o etted object, and finesse, o said fist mined meansfor ionising sore cit" cavity in the materiel dow petites,

sistntiofisiy maid, movstie means for eontinoonsiy depositing in saidmold plastic mdteriel to form an elongated object, and

core carried by said movstie means.

2Q- A stationery mold-movable means for ontintiousiy depositin in saidmold plastic nis'terisi to form one o' ste' d'objeet, and s flexiblesore carried y seid movable stetionsrfr mold; movsifle means forosetiimousiy epoeitingin said mold piastic :iisteriei to fern 'neiongsted ebjieet, end ffiexiioie distensiiwie sore cer ied in saidmovsiiie means, I

5-5 8J9. ccstinwroueiy maksg'eted menoiitiric 'noiiow omects, s meld,treveiing copper for desiting elastic meteriai inssid mold and 'iLilmveiing core. I e 4 s s; in en apperoitist' for eontirmousiyminkncnoiitino eiosgeted iifiiidii' ebyeets, a

xnoid s." treveiing. hopper for depositing piestic material in ssid moldand a We 'orte'd on said hopper and extending V5 yesfiqnrciy therefrom.

"i. in en eppemtus jfercontitinensiy majeof said here. i

- some? Eng monefitliie elongated holiow objects, a

stationary mold a treveiing ho per for depositing plastic motorist inSE1 mold, hairing on one wail 24' flmgefor regulating the depth of saiddeposited material, and a, core supported at one end in the other Wellof said hopper and extending resrwardly therefrom.

8. In combination with means for conobje'ct and means for forming a boreor cavity in said object, means for eivering a hardening material to thesurface 9. In combination with means for con-- tinuousi'y doositing-plsstic material to form an eiong'eteu object and means for folming a bore or cavity in said object, meansfor'conjveying s relativelyquick setting material to the surface of said bore.

10. In combination with tinuousiy depositing plastic msteriel to form onelongated object and means for forming a bore or cesvity in said object,means for conveyi'ng a relatively quick setting material in 7Qeomininuted form to the surface of said bore.

1 1.- In enepperetus for continuously male ing elongated hollow objectsfrom plastic material, a device for continuously depositing said plasticmaterial, a core carried 5 by said device, and means in said device'fordepositing s material relatively quick setting when moistenedupon thesui'ieceof said core.

12. in an a pemtus for continuously male ing elongate hollow objectsfrom plastic material, a rec'eptecie for continuously degositin saidplastic ineteiial score carried y said receptacle and in saidreceptacle, a that for conveying mum's relatively quick setting whenmoistened upon the sflrfgoe of -8 5 said core.

Initestimony whereof I have affixed my signature ineresence of twowitnesses.' I awe L -B YLE:

Witnesssz" v 5 j wmflsmsnmp v I anemone/Emma means for corr-

